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THREAT OPS › Threat News › [NVD] CVE-2026-64294 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: mm: do file ownership checks with the proper mount idmap Ever since idmapped mounts were introduced, inode ownership checks (for side-channel protection) in mincore() and madvise(MADV_PAGEOUT) were done against

[NVD] CVE-2026-64294 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: mm: do file ownership checks with the proper mount idmap Ever since idmapped mounts were introduced, inode ownership checks (for side-channel protection) in mincore() and madvise(MADV_PAGEOUT) were done against

mednvdPublished 2026-07-25

CVE-2026-64294 CVSS: 5.5 MEDIUM Published: 2026-07-25T10:17:10.160

In the Linux kernel, the following vulnerability has been resolved:

mm: do file ownership checks with the proper mount idmap

Ever since idmapped mounts were introduced, inode ownership checks (for side-channel protection) in mincore() and madvise(MADV_PAGEOUT) were done against the nop_mnt_idmap, which completely ignores the fil

Indicators of compromise

CVE-2026-64294cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64294